Arid
DOI10.1016/j.quascirev.2017.11.010
Late Pleistocene dust dynamics and pedogenesis in Southern Eurasia - Detailed insights from the loess profile Toshan (NE Iran)
Vlaminck, Stefan1; Kehl, Martin1; Rolf, Christian2; Franz, Sven Oliver3; Lauer, Tobias4; Lehndorff, Eva5; Frechen, Manfred2; Khormali, Farhad6
通讯作者Vlaminck, Stefan
来源期刊QUATERNARY SCIENCE REVIEWS
ISSN0277-3791
出版年2018
卷号180页码:75-95
英文摘要

In southern Eurasia recurrent phases of aridization, dust source extension and enhanced Aeolian sedimentation alternated with moister intervals, promoting reduced deflation areas and dust accumulation in the context of late Pleistocene climate changes. Weathering and soil forming intensity in this greater region are, hence, mainly governed by fluctuations in the balance between dust supply and moisture availability.


Among the hitherto known sections, the Toshan loess-soil sequence (LPS) represents a key site due to the quality of the record and the multitude of available data giving detailed insights into the timing and magnitude of dust accumulation and soil formation of the region. To elucidate these dynamics for much of the past 130.000 years bulk mineralogical and geochemical data are presented supplemented by a high resolution magnetic susceptibility record and by the results of a detailed micromorphological study of loess at Toshan.


The last interglacial Luvisol/Phaeozem-like (similar to MIS 5e) and the early glacial interstadial steppic palaeosols (similar to MIS 5 c and a) are characterized by gradually increasing grain-size and decreasing degrees in decomposition of micaceous and mafic minerals. Pronounced feldspar weathering is detected in the last interglacial and modern soils only, which formed under reduced or absent dust deposition on penultimate and last glacial loess, respectively (postsedimentary). The overall pedosedimentary conditions correspond to large scale trends of increasing drought, dust accumulation and wind strength in southern Eurasia in relation to decreasing moisture availability towards the early Pleniglacial (similar to MIS 4), causing soil formation under ongoing dust deposition (synsedimentary). Similar intervals of synsedimentary soil formation are recorded during the interglacial/interstadial-stadial transitions of the early glacial and during pleniglacial (similar to MIS 4 to 2) interstadials. The latter are marked by gradual increases in magnetic susceptibility, colour and decreasing texture. Conversely, silicate weathering could not be detected, suggesting that grain-size fluctuations are a primary feature. Thus, windy and arid pleniglacial conditions in southern Eurasia were interrupted by intermittent phases of synsedimentary soil formation, in response to short-lived and relatively moist interstadials. Although the interrelation of these incipient soils, throughout southern Eurasia is afflicted with considerable restrictions, the oscillatory pattern of the Toshan LPS bears great similarity with millennial-scale oscillations recorded in limnic archives of western Asia. (C) 2017 Elsevier Ltd. All rights reserved.


英文关键词Late Pleistocene Dust accumulation Weathering Soil formation Micromorphology Palaeoclimate Eurasia Pleniglacial
类型Article
语种英语
国家Germany ; Iran
收录类别SCI-E
WOS记录号WOS:000424183200006
WOS关键词REGION NEGEV DESERT ; PALEOSOL SEQUENCES ; CASPIAN SEA ; NORTHERN IRAN ; CENTRAL-EUROPE ; CLIMATE-CHANGE ; PALEOCLIMATIC IMPLICATIONS ; MAGNETIC-SUSCEPTIBILITY ; CENTRAL-ASIA ; GRAIN-SIZE
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/212498
作者单位1.Univ Cologne, Inst Geog, Albertus Magnus Pl, D-50923 Cologne, Germany;
2.LIAG, Geochronol & Isotope Hydrol, Stilleweg 2, D-30655 Hannover, Germany;
3.Steinmann Inst Geol Mineral & Palaeontol, Nussallee 8, D-53115 Bonn, Germany;
4.Max Planck Inst Evolutionary Anthropol, Dept Human Evolut, Deutsch Pl 6, D-04103 Leipzig, Germany;
5.Univ Bonn, Inst Crop Sci & Resource Conservat Soil Sci & Soi, Nussallee 13, D-53115 Bonn, Germany;
6.Gorgon Univ Agr Sci & Nat Resources, Dept Soil Sci, Gorgon, Iran
推荐引用方式
GB/T 7714
Vlaminck, Stefan,Kehl, Martin,Rolf, Christian,et al. Late Pleistocene dust dynamics and pedogenesis in Southern Eurasia - Detailed insights from the loess profile Toshan (NE Iran)[J],2018,180:75-95.
APA Vlaminck, Stefan.,Kehl, Martin.,Rolf, Christian.,Franz, Sven Oliver.,Lauer, Tobias.,...&Khormali, Farhad.(2018).Late Pleistocene dust dynamics and pedogenesis in Southern Eurasia - Detailed insights from the loess profile Toshan (NE Iran).QUATERNARY SCIENCE REVIEWS,180,75-95.
MLA Vlaminck, Stefan,et al."Late Pleistocene dust dynamics and pedogenesis in Southern Eurasia - Detailed insights from the loess profile Toshan (NE Iran)".QUATERNARY SCIENCE REVIEWS 180(2018):75-95.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Vlaminck, Stefan]的文章
[Kehl, Martin]的文章
[Rolf, Christian]的文章
百度学术
百度学术中相似的文章
[Vlaminck, Stefan]的文章
[Kehl, Martin]的文章
[Rolf, Christian]的文章
必应学术
必应学术中相似的文章
[Vlaminck, Stefan]的文章
[Kehl, Martin]的文章
[Rolf, Christian]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。